Halogen bulb



FIG. 1 is a perspective view of a first embodiment of a halogen bulb showing my new design;

FIG. 2 is a top plan view of the halogen bulb as shown in FIG. 1;

FIG. 3 is a front side elevational view of the halogen bulb as shown in FIG. 1, the back, right and left side elevational views are identical; and,

FIG. 4 is a bottom plan view of the halogen bulb as shown in FIG. 1. 

The ornamental design for a halogen bulb, as shown and described. 